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https://github.com/ARM-software/arm-trusted-firmware.git
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831b0e9824
And from crash_console_flush. We ignore the error information return by console_flush in _every_ place where we call it, and casting the return type to void does not work around the MISRA violation that this causes. Instead, we collect the error information from the driver (to avoid changing that API), and don't return it to the caller. Change-Id: I1e35afe01764d5c8f0efd04f8949d333ffb688c1 Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
148 lines
3.8 KiB
ArmAsm
148 lines
3.8 KiB
ArmAsm
/*
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* Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arch.h>
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#include <asm_macros.S>
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#include <platform_def.h>
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.globl plat_secondary_cold_boot_setup
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.globl plat_report_exception
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.globl platform_is_primary_cpu
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.globl plat_crash_console_init
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.globl plat_crash_console_putc
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.globl plat_crash_console_flush
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.globl platform_mem_init
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.macro crash_ram_log
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/*
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* Check teearg->atf_log_buf_size.
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* Exit if atf_log_buf_size equals 0
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*/
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adr x2, ptr_atf_crash_flag
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ldr x2, [x2]
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/* exit if ptr_atf_crash_flag equals NULL */
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cbz x2, exit_putc
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/*
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* set atf crash magic number
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*/
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1:
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adr x2, ptr_atf_crash_flag
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ldr x2, [x2]
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mov_imm x1, 0xdead1abf
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/* p_atf_log_ctrl->atf_crash_flag = 0xdead1abf */
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str w1, [x2]
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/* can't use w3 return addr, w4, start of buffer addr */
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ldr w2, [x2]
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cmp w2, w1
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b.ne 1b
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/*
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* get cpu id
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*/
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mrs x1, mpidr_el1
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/* refer to platform_get_core_pos */
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and x2, x1, #MPIDR_CPU_MASK
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and x1, x1, #MPIDR_CLUSTER_MASK
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/* x1 = cpu id (cpu id = aff0 + aff1*4 ) */
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add x1, x2, x1, LSR #6
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adr x2, ptr_atf_except_write_pos_per_cpu
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ldr x2, [x2]
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/*
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* plus (cpu_id * 8)-->
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* &p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id]
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* x2 = &p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id];
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*/
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add x2, x2, x1, LSL # 3
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/* log write */
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/* w1 = p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id] */
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ldr x1, [x2]
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/* *x1 = w0-->
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* *(p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id]) = c)
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*/
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strb w0, [x1]
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/* w1++ */
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add x1, x1, #1
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/* p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id] = w1 */
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str x1, [x2]
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exit_putc:
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.endm
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/* -----------------------------------------------------
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* void plat_secondary_cold_boot_setup (void);
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*
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* This function performs any platform specific actions
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* needed for a secondary cpu after a cold reset e.g
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* mark the cpu's presence, mechanism to place it in a
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* holding pen etc.
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* -----------------------------------------------------
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*/
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func plat_secondary_cold_boot_setup
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/* Do not do cold boot for secondary CPU */
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cb_panic:
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b cb_panic
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endfunc plat_secondary_cold_boot_setup
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func platform_is_primary_cpu
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and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
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cmp x0, #PLAT_PRIMARY_CPU
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cset x0, eq
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ret
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endfunc platform_is_primary_cpu
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/* ---------------------------------------------
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* int plat_crash_console_init(void)
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* Function to initialize the crash console
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* without a C Runtime to print crash report.
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* Clobber list : x0, x1, x2
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* ---------------------------------------------
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*/
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func plat_crash_console_init
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mov_imm x0, UART0_BASE
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mov_imm x1, UART_CLOCK
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mov_imm x2, UART_BAUDRATE
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b console_init
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ret
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endfunc plat_crash_console_init
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/* ---------------------------------------------
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* int plat_crash_console_putc(void)
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* Function to print a character on the crash
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* console without a C Runtime.
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* Clobber list : x1, x2
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* ---------------------------------------------
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*/
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func plat_crash_console_putc
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mov_imm x1, UART0_BASE
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b console_core_putc
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ret
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endfunc plat_crash_console_putc
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/* ---------------------------------------------
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* void plat_crash_console_flush(int c)
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* Function to force a write of all buffered
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* data that hasn't been output.
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* Out : void.
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* Clobber list : x0, x1
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* ---------------------------------------------
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*/
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func plat_crash_console_flush
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mov_imm x0, UART0_BASE
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b console_core_flush
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endfunc plat_crash_console_flush
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/* --------------------------------------------------------
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* void platform_mem_init (void);
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*
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* Any memory init, relocation to be done before the
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* platform boots. Called very early in the boot process.
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* --------------------------------------------------------
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*/
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func platform_mem_init
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ret
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endfunc platform_mem_init
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